Fantasy sports · DFS · Best ball · Betting

Fantasy sports tools

DFS lineups for DraftKings and FanDuel, tested against thousands of simulated contests before you enter. Your whole best ball portfolio in one place. Odds with the juice removed. NFL and college football.

Three plans: $10 a week, $25 a month, or $99 for the season.

Compare the plans ↓ Replay a real DraftKings contest, free →

Background clip: Kickoff, Baker v Benedictine 2014 by Paulmcdonald, CC BY-SA 4.0. Edited: cropped, slowed, softened and darkened.

The toolkit

Everything in one place

Pick whatever you play. Every number can be opened up, so you can see where it came from.

DFS

DraftKings · FanDuel

Build lineups for the exact contest you are entering, ranked by how they did when that contest was simulated, and export them in the site's upload format.

The ATO DFS builder after simulating the DraftKings NFL Week 3 main slate: the top two ranked lineups, each a nine-player roster from quarterback to defense, with an Export DraftKings CSV button above.
The DFS builder, DraftKings NFL Week 3 main slate, after a simulation run.
  • Lineup optimizer Members
  • Tournament simulator Members
  • Cash game optimizer Members
  • Beat the Field Free
See how the simulator works →

Best ball

Underdog and more

Once you've drafted twenty teams it's hard to keep track of who you own. See your exposure across every team, and, for NFL and college football teams, a weekly scoreboard for each one.

The Best Ball Portfolio Manager's exposure table: NFL players listed by how many of 20 drafts they appear in, their exposure share, the exposure their ADP would predict, and an overweight flag.
The Portfolio Manager on a demo portfolio of 20 NFL drafts: your exposure against what ADP would predict.
  • Portfolio Manager Members
  • Weekly team scoreboards Members
  • College football slate and schedule Free
Open the Portfolio Manager →

Season-long

Redraft · weekly

The weekly decisions: who to start, who to pick up, and who is actually getting the ball.

The NFL projections board for Week 3: each player's projection, our number next to the betting market's, and a low-end outcome.
The NFL projections board, Week 3.
  • NFL projections and start/sit Members
  • Waiver Wingman and the Trade Calculator Free
  • ADP by site and mock drafts Free
See the projections →

Betting

Major sportsbooks, vig removed

Every price with the vig stripped out, so you can see what it really implies, and where the books disagree with each other.

The odds board for two college football games, Virginia Tech at Boston College and San Diego State at Toledo, showing each team's no-vig fair probability and the DraftKings moneyline.
The odds board, college football moneylines for September 26.
  • Odds board Members
  • NFL props vs the market Members
  • CFB moneyline sheet Members
  • Hedge calculator and parlay manager Free
Open the odds board →
DraftKings app entry details for an NFL Showdown Captain Mode entry, IND 30 at KC 33, final: Kelce as captain, then Taylor, Walker III, Mahomes, Butker and Thornton.
FanDuel app lineup scores for a single-game NFL entry, WAS 17 at SF 23, final, in first place with 118.16 points: McCaffrey at MVP, then Daniels, White, Diggs, Purdy and Okonkwo.
Real single-game entries from the ATO team, as the apps show them after the game: DraftKings Showdown, IND at KC, and FanDuel MVP, WAS at SF. One contest is one result, shown here for the format, not as proof of anything.
Showdown and MVP

Single-game contests

One game, a captain or MVP slot at 1.5x, and a field that piles onto the same few players. The builder handles both sites.

  • DraftKingsShowdown Captain Mode. Upload the salary file; lineups export with DraftKings IDs.
  • FanDuelSingle game with the MVP slot. Upload the player list; lineups export in FanDuel's format.
  • How it ranksBy simulated return. The number itself is hidden because a reliable correction for it has not been established.
The evidence

How we test ourselves

Ownership is the hardest thing in DFS to predict, so we checked ours against what real contests actually did.

15M+real DraftKings contest entries the ownership model was scored against
52,595player ownership predictions checked, one for every player someone actually rostered
0.830average correlation with real ownership, measured contest by contest

Where the model misses is on the same page as where it hits.

Read the full test
Three ways to pay

Pricing

Every plan gets every tool. The only difference is how long it runs.

Founding member spots37 of 50 left

We are opening accounts to 50 founding members while we add server capacity. When the spots are gone, signups close until we add more.

Football Season PassOne payment
$99 one time

Runs through the Super Bowl, February 2027. One payment, nothing renews.

Get the season pass
Monthly
$25 / month

Renews every month until you cancel.

Go monthly
Weekly
$10 / week

Renews every week until you cancel.

Go weekly

Every plan includes

  • DFS lineup builder and tournament simulator: NFL and college football, with NBA in beta, on DraftKings and FanDuel
  • Best Ball Portfolio Manager: exposure across all your Underdog teams, college football, NFL and college basketball
  • Weekly scoreboards and custom team names for your NFL and college football best ball teams, with college basketball when it launches
  • NFL projections and props vs the market, the CFB moneyline sheet, and the odds board

Secure checkout by Stripe. Monthly and weekly cancel any time from your account.

Before you sign up

Questions

Will this make me money?

No tool can promise that, and anyone who does is selling you something. DFS and betting are competitive markets. What ATO does is model the contest and the market honestly so your decisions are better informed. We publish selected model tests and their limitations, and each result names the version tested and its sample size where we have them.

Which sites and slates work today?

NFL on DraftKings and FanDuel, Classic and single-game. College football Classic on both sites, and single-game on FanDuel. NBA is available as a beta; college basketball DFS is still in development. The slate-by-slate table lists how each slate type was tested. Other sports do not have DFS support yet.

See the full slate-by-slate table →
What can I use without paying?

Beat the Field, Waiver Wingman, the hedge calculator and parlay manager, ADP and mock drafts, the college football slate and schedule, and the weekly NFL report and college recap. None of them need an account.

What is the difference between the plans?

Only how long they run. The season pass is one $99 payment through the Super Bowl in February 2027. Monthly is $25 and weekly is $10, and both renew until you cancel. All three open exactly the same tools.

Can I cancel?

Monthly and weekly plans cancel any time from your account, with no contract and no phone call. The season pass is a single payment and does not renew, so there is nothing to cancel, but it is refundable within 14 days of buying it. Monthly charges are refundable within 7 days. To ask, email [email protected].

Where does the data come from?

Play-by-play and schedule data from nflverse going back to 2009, real DraftKings contest results, live sportsbook prices, and live injury reports. Model settings are fitted to that data and documented in public.

Read How Our Model Works →

Not ready yet? Hear when we add something

Leave your email and we will tell you when we add a new tool or more contests to play. No set schedule, no spam, unsubscribe whenever.

Get started

Ready for this week's slate?

Every paid tool on one membership, three ways to pay. Or start with the free ones and decide later.